Econometrica: Nov 2009, Volume 77, Issue 6

Liquidity and Trading Dynamics

https://doi.org/10.3982/ECTA7231
p. 1751-1790

Veronica Guerrieri, Guido Lorenzoni

In this paper, we build a model where the presence of liquidity constraints tends to magnify the economy's response to aggregate shocks. We consider a decentralized model of trade, where agents may use money or credit to buy goods. When agents do not have access to credit and the real value of money balances is low, agents are more likely to be liquidity constrained. This makes them more concerned about their short‐term earning prospects when making their consumption decisions and about their short‐term spending opportunities when making their production decisions. This generates a coordination element in spending and production which leads to greater aggregate volatility and greater comovement across producers.

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